<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>@media와 반응형 grid</title> <style> .container { display: grid; grid-template-columns: 1fr 1fr 1fr; grid-template-rows: auto; gap: 10px; grid-template-areas: "header header header" "main main sidebar"; } .item { border: 2px solid #ccc; border-radius: 3px; text-align: center; padding: 10px; } .header { grid-area: header; background-color: #fea; } .main { grid-area: main; background-color: #afb; } .sidebar { grid-area: sidebar; background-color: #cdf; } @media screen and (max-width: 600px) { .container { grid-template-columns: 1fr; grid-template-areas: "header" "main" "sidebar"; } } </style> </head> <body> <div class="container"> <div class="item header">Header</div> <div class="item main">Main Content</div> <div class="item sidebar">Sidebar</div> </div> </body> </html>